Radial velocities of CH Cygni during the outburst started in 1977

Details Radial velocities of CH Cygni during the outburst started in 1977 Radial velocities of CH Cygni during the outburst started in 1977

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...113..250h&link_type=abstract

Astronomy and Astrophysics, vol. 113, no. 2, Sept. 1982, p. 250-260. Research supported by the Consiglio Nazionale delle Ricerc

Astronomy and Astrophysics

Astrophysics

23

Binary Stars, M Stars, Radial Velocity, Stellar Spectra, Balmer Series, Data Processing, Emission Spectra, Ferric Ions, H Lines, K Lines, Line Spectra, Metal Ions, Photosphere, Stellar Envelopes, Tables (Data)

Scientific paper

The radial velocities given by the M 6 III photospheric lines and by the 'non-photospheric lines' are measured from the start of the outburst of 1977 to June 1981 (spectral range 3400-6700 A; spectral resolution approximately 0.2 A). No evidence is found either of a hypothetical hot companion or of an accretion disk; the radial velocities given by the Balmer absorption cores, the Ca II absorption cores, the permitted and forbidden emission lines of Fe II, the forbidden lines of O I, S II, Ni II, and Cu II indicate effects of stratification in the envelope.

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